outages - simple issue question

Hello ,
a simple question about Outages tab
if I see a device there with “active” status and in the duration I see 21:17:11 -it’s mean that the dude didn’t see the device for 21 hours - yes? (I only use the ping probe - just want to know if he is alive).
and when I see “resolve” - it’s mean that the device is now online ?

thank you ,

Correct. It keeps a record of the time that it lost contact (or the particular probe went down). How long it has been down and whether the outage is acive or resolved. You have to do your own calculations to figure out what time the outage was resolved.

o.k.
this is what I thought - but there is something weird in my system :
I have a device that is “active” for some time , then I see he get a resolved (so the timer stopped)
but he is still unreachable. (red on the map, and no ping to him…)
so what is wrong?